This emergency whistle is a must-have for any outdoor enthusiast or survival expert. Its minimalist design makes it the perfect accessory for camping, hiking, and other outdoor activities. The whistle is corrosion-resistant and lightweight, ensuring that it will last a long time and be easy to use in any situation. The whistle comes with an upgraded 16mm titanium sidepushkeyring. It features a loud sound that can be heard from a distance. The item length is 2.01in/51.1mm, and the item width is 0.0285in/7.1mm. This little featherweight whistle weighs in at just 2.5 grams and is the perfect addition to any outdoor survival gear collection.